A Qasedak rocket is paraded during Army Day celebrations in Tehran on April l 18, 2011.
Iran's F-4 'Fantom' fighter jets fly during the annual Army Day military parade in Tehran on April 18, 2011.
Iranian soldiers in full camouflage march during the Army Day parade in Tehran on April 18, 2011.
Iranian soldiers with gas masks march during the Army Day parade in Tehran on April 18, 2011.
Iranian soldiers in full camouflage march during the Army Day parade in Tehran on April 18, 2011.
Iran's Basij Islamic militia march during the Army Day parade in Tehran on April 18, 2011. The volunteer militia was set up by Iran's late revolutionary leader Ayatollah Ruhollah Khomeini to defend the 1979 Islamic revolution. Although its exact strength is unknown, observers estimate that hundreds of thousands of young and old Iranian men and women are members of the nationwide network.
An air defence missile is driven past Iranian President Mahmoud Ahmadinejad (L) during the Army Day parade in Tehran, on April 18, 2011.
An air defence missile is driven past Iranian President Mahmoud Ahmadinejad (C) and top military commanders (back) during the Army Day parade in Tehran on April 18, 2011.